National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Mostly Cloudy

37°F

3°C

Humidity 96%
Wind Speed NE 3 mph
Barometer 30.11 in (1019.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 10 Jan 12:54 am CST
Extended Forecast for

4 Miles ESE Bethany IL

  • Overnight

    Overnight: A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 37. Light and variable wind.

    Low: 37 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A chance of rain before noon, then a slight chance of showers after noon. Cloudy through mid morning, then gradual clearing, with a high near 43. Light west wind becoming west northwest 13 to 18 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 50%.

    High: 43 °F

    Chance Rain
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. Blustery, with a west northwest wind 11 to 20 mph, with gusts as high as 30 mph.

    Low: 22 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 33. Breezy, with a west northwest wind 15 to 20 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 33 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. South southwest wind 6 to 10 mph, with gusts as high as 17 mph.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 44. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 44 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 37. Light and variable wind.
Saturday
A chance of rain before noon, then a slight chance of showers after noon. Cloudy through mid morning, then gradual clearing, with a high near 43. Light west wind becoming west northwest 13 to 18 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 22. Blustery, with a west northwest wind 11 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 33. Breezy, with a west northwest wind 15 to 20 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Mostly clear, with a low around 23. South southwest wind 6 to 10 mph, with gusts as high as 17 mph.
Monday
Sunny, with a high near 44. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 31. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A chance of rain and snow after noon. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
Mostly cloudy, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Bethany IL
 39.61°N 88.67°W (Elev. 659 ft)
Last Update:
9:37 pm CST Jan 9, 2026
Forecast Valid:
1am CST Jan 10, 2026-6pm CST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation